The Opening of the Roman Inquisition's Central Archive
- Article on the opening from an historian's perspective.
- http://www.historians.org/perspectives/issues/1999/9905/9905arc1.cfm

Papal States: Exiles and Political Prisoners
- An account of the composition of the political prisoners and exiles who were pardoned in 1846.
- http://www.ohiou.edu/~Chastain/ip/papstaex.htm

Papal States
- A history of the Papal states before the 1848 revolution and how the events of 1848 affected the states. From the 1848 Encyclopedia.
- http://www.ohiou.edu/~Chastain/ip/papalsta.htm

Antonelli, Cardinal Giacomo
- The last of the lay cardinals. Papal secretary of state during the revolutionary upheaval of 1848 and the reaction which followed.
- http://www.ohiou.edu/~Chastain/ac/anton.htm